ef363e2dc9
message is retained, and you can't get rid of it. since it's dispalyed in inverse, it feels like there's always an error happening (which is really what the code has -- the above string is displayed via the error() function.) for several types of key press that largely are just "redraw" operation (space, ^L, etc.), clear the error string as well.
166 lines
4.0 KiB
C
166 lines
4.0 KiB
C
/* $NetBSD: keyboard.c,v 1.26 2015/08/23 18:33:15 mrg Exp $ */
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/*-
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* Copyright (c) 1980, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)keyboard.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: keyboard.c,v 1.26 2015/08/23 18:33:15 mrg Exp $");
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#endif /* not lint */
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#include <sys/types.h>
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#include <ctype.h>
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#include <signal.h>
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#include <termios.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include "systat.h"
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#include "extern.h"
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extern sig_atomic_t needsredraw;
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void
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keyboard(void)
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{
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int ch, rch, col;
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char *line;
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int i, linesz;
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static char help[] = "help";
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static char quit[] = "quit";
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ch = 0; /* XXX gcc */
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linesz = COLS - 2; /* XXX does not get updated on SIGWINCH */
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if ((line = malloc(linesz)) == NULL) {
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error("malloc failed");
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die(0);
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}
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for (;;) {
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col = 0;
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move(CMDLINE, 0);
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while (col == 0 || (ch != '\r' && ch != '\n')) {
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refresh();
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for (;;) {
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ch = getch();
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if (!needsredraw)
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break;
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redraw();
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}
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if (ch == ERR) {
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display(SIGALRM);
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continue;
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}
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if (ch == KEY_RESIZE) {
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redraw();
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continue;
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}
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ch &= 0177;
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rch = ch;
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if (col == 0) {
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switch(ch) {
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case '\n':
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case '\r':
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case ' ':
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clearerror();
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display(0);
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break;
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case CTRL('l'):
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clearerror();
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wrefresh(curscr);
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break;
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case CTRL('g'):
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status();
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break;
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case '?':
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case 'H':
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case 'h':
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command(help);
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move(CMDLINE, 0);
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break;
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case 'Q':
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case 'q':
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command(quit);
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break;
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case ':':
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move(CMDLINE, 0);
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clrtoeol();
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addch(':');
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col++;
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break;
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}
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continue;
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}
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if (ch == '\b' || ch == '\177' || ch == erasechar()) {
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if (col > 0)
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col--;
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goto doerase;
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}
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if (ch == CTRL('w') && col > 0) {
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while (--col >= 0 &&
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isspace((unsigned char)line[col]))
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continue;
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col++;
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while (--col >= 0 &&
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!isspace((unsigned char)line[col]))
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if (col == 0)
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break;
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col++;
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goto doerase;
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}
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if (ch == killchar() && col > 0) {
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col = 1;
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doerase:
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move(CMDLINE, col);
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clrtoeol();
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continue;
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}
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if (isprint(rch) || rch == ' ') {
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if (col < linesz) {
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line[col] = rch;
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mvaddch(CMDLINE, col, rch);
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col++;
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}
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}
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}
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line[col] = '\0';
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/* pass commands as lowercase */
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for (i = 1; i < col ; i++)
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line[i] = tolower((unsigned char)line[i]);
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command(line + 1);
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}
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/* NOTREACHED */
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}
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